Finding the Fourth Proportional to 5,209,144.80, 7,188,277.68 and 2,916,780
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Solution
The fourth proportional to 5,209,144.80, 7,188,277.68 and 2,916,780 is: 4,024,964.82
Step by Step Solution
- Step 1: Write the proportion equation
5,209,144.80 : 7,188,277.68 = 2,916,780 : x - Step 2: Convert to fraction form
5,209,144.80/7,188,277.68 = 2,916,780/x - Step 3: Cross multiply
5,209,144.80x = 7,188,277.68 × 2,916,780 - Step 4: Simplify right side
5,209,144.80x = 20,966,624,571,470.40 - Step 5: Solve for x
x = 20,966,624,571,470.40/5,209,144.80 - Step 6: Final answer
x = 4,024,964.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.